7 Grand Dad refers to an infamous unlicensed NES bootleg of the game 'The Flintstones: The Rescue of Dino & Hoppy,' which features Mario's head swapped onto Fred Flintstone's body. The meme gained massive internet notoriety in 2014 when streamer Joel from Vinesauce discovered the game during a bootleg showcase and reacted with genuine shock and confusion to the title screen. Since then, the 'Grand Dad' character and the accompanying chiptune rendition of the Flintstones theme have become staples of internet culture, particularly within the SilvaGunner 'high-quality rip' community. It is used to represent bootleg absurdity, nostalgia, or sudden, unexpected reveals in gaming contexts.